This is a pay for use site that has one free access per computer per day. Students multiply expressions with exponents by dragging and dropping the next step into a box. Feedback is given if the wrong answer is selected. Students are required to alternate between multiplying exponential expressions, and raising a power to a power. There is a short self check at the end of the exercise.

This material is based upon work supported by the
National Science Foundation under Grant DUE-0226284.
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National Science Foundation.